Effect of Different Surface Treatment of Ceramic Particles on Microscopic Interface of Ceramic/High-chromium Cast Iron Composites
The power plant coal mill grinding roller,grinding plate prepared by using the traditional high chromium cast iron are unable to meet the wear resistant demand,and the ceramic particle reinforced metal-based wear-resistant composites have become the first choice to replace traditional wear-resistant materials.The effect of nickel-plating and titanium plating surface treatment on the interface of ceramic/high-chromium cast iron composites was studied.The results show that the wettability of the interface between the ceramic and the high-chromium cast iron is improved after surface treatment,and good casting and infiltration effect can be obtained.There is no obvious intermediate transition layer between the nickel plated ceramic particles and the high chromium cast iron composite,and the bonding strength between the two is not high,and the combination between the ceramic and high-chromium cast iron is mechanical bonding.The interface between the titanium plated ceramic particles and high chromium cast iron composites undergoes chemical reaction due to the action of Ti element to form an obvious intermediate transition layer,and the interface bonding strength is high,and the combination between the ceramics and high chromium cast iron is metallurgical bonding.
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